Discusses ways to program various entertaining games and puzzles with numbers, geometric shapes, etc. Most games and puzzles are presented in several stages. First, the formulation of the problem itself and the requirements for the algorithm for solving it are explained. The next section of the book discusses the algorithm itself and possible ways of its implementation. At the end of the book, sketches of their software implementation are given for many games and puzzles. The Pascal-type language used allows translation into other widely used programming languages. For beginner programmers, university and technical school students.